福门特拉岛在初步成功后再钻探两口皮尔萨尔野猫井

根据德克萨斯铁路委员会的数据，在投产后的前 2.5 个月内，Formentera Partners 最初两次测试的平均产量超过 1,000 桶油当量/天。

妮莎
达尔博讷
石油和天然气投资者

 福门特拉合伙公司 (Formentera Partners)向哈特能源公司证实，该公司正在德克萨斯州南部钻探更多皮尔萨尔 (Pearsall) 野猫钻井，以划定其新油气储量地块。

该公司最初的两口油井在投产后的前两个半月内，日产量就超过 1,000 桶油当量。

根据德克萨斯铁路委员会 (RRC) 的最新数据，截至 3 月份的前 75 天，福门特拉岛的Darlene 1-STX #N731HP在弗里奥县东南部生产了 51,504 桶石油和 142 百万立方英尺原油，总计 75,149 桶油当量，其中 69% 为石油，平均每天 1,002 桶油当量。

初始双井平台中的另一口井Hurrikain Cat I-STX #S731H在投产后的 71 天内产油量为 55,180 桶石油和 2.01 亿立方英尺天然气，总计产油量为 88,647 桶油当量，占石油产量的 62%，平均产油量为 1,249 桶油当量/天。

福门特拉岛与另一家私人勘探与生产公司 Britanco LLC 以及专注于二叠纪盆地的Jagged Peak Energy创始人乔·贾格斯 (Joe Jaggers) 成立了一家合资企业 (JV)。2019 年，福门特拉岛管理合伙人布莱恩·谢菲尔德 (Bryan Sheffield) 的Parsley Energy 以 23 亿美元的股票和债务收购了该公司。

谢菲尔德于2021年以76亿美元的股票和债务承担方式将Parsley出售给了先锋自然资源公司（Pioneer Natural Resources）。此后，先锋自然资源公司又以645亿美元的价格被出售给埃克森美孚公司。

合资公司的前两口井共计 3.24 英里长的水平段与 1582 号公路平行，终止于其与 85 号公路交叉口附近。这两口井周围都是短奥斯汀白垩水平段，位于井深约 6,500 英尺处，这些水平段是在 2000 年之前钻探的，后来被封堵。

该地区的皮尔萨尔峰海拔约 10,000 英尺。

福门特拉岛用于划定租赁权的两个最新双井平台之一位于东部约 10 英里处，与 Hurrikain/Darlene 平台平行。

这两口井分别是朝北的 Hooey-STX 单元 #N731H 和朝南的 Sendero-STX 单元 #S731H。

谢菲尔德证实，福门特拉岛目前正在对 Sendero 井下套管，并计划下一步钻探 Hooey 井。

Patterson-UTI Drilling 的 Apex-XK #271 步行钻机正在钻取 Sendero/Hooey 孔。

第三个发射台计划位于 Hurrikain/Darlene 西北约三英里处，与麦金利路平行，从德克萨斯州皮尔斯尔以南 35 号州际公路麦金利机场脚下延伸，终止于斯泰西路以南。

这两口井分别是北侧 Roper-STX #N731H 井和南侧 Roper-STX Unit #S731H 井。

上倾油窗

在 2010 年代中期野猫钻井公司放弃致密岩石 Pearsall 之后，新的 Pearsall 尝试使用现代、强度更高的压裂配方，让其获得回报。

此外，福门特拉岛的重点是 2010 年代初皮尔斯尔 (Pearsall) 探井主要遇到天然气的地方的上倾角。

Hurrikain 井和 Darlene 井位于 Pearsall 趋势带的 Lower Bexar 成员内。

在那里，皮尔萨尔河比鹰福特河深约 3,000 英尺，比奥斯汀白垩河深约 3,500 英尺。

该合资公司与 Britanco 和 Jaggers 共同投资建设了 Indio Tanks-Pearsall Field 租赁区块，该区块位于 Briscoe Ranch-Eagle Ford 和 Pearsall-Austin Chalk 油田之下。

谢菲尔德告诉哈特能源公司：“向 Britanco 团队致敬，他们是引进乔·贾格斯的推动力，他们冒险租赁了这块地。”

Hurrikain井24小时产油量为1,499桶，水平段深度7,862英尺，节流口径为36/64。重力为44°API。

根据 RRC 文件，该油井在 2 月 3 日测试前的 14 天内已经产出 15,130 桶原油。

Darlene 野猫井的IP井于 2 月 7 日从 9,220 英尺深的水平井（36/64 英寸节流口）产出 1,282 桶/天。该井于 1 月 15 日完工，1 月底最后几天的产量为 5,001 桶。

压裂液为2,421桶/英尺。IP报告中未包含支撑剂。

弗里奥县唯一的另一家皮尔斯尔石油生产商是惠特利杜博斯 1H 号，由马拉松石油公司于 2014 年生产  ，现归 Britanco 所有。

根据 RRC 文件，这条 5,736 英尺长的水平井——与几百码外的 Darlene 和 Hurrikain 水平井平行——已分 20 个阶段完成，每英尺使用 16 桶液体，每英尺使用 475 磅支撑剂。

该井采用12/64英寸节流阀，产油量为152桶/日，产气量为183万立方英尺。该井投产11年来，已产油97,754桶/日，产气量为3.5亿立方英尺。RRC文件显示，1月份产量为125桶/日；Britanco报告称，2月份和3月份该井均未产油。

2016 年，马拉松公司将皮尔斯尔测试井出售给了 Earthstone Energy 公司，后者又于 2022 年将其出售给了 Alvarado 2014 LLC 公司。

Britanco 于 2023 年中期收购了它。

福门特拉岛 3 块 6 口井地图
Formentera Partners 的首个双井 Pearsall 平台（中）投产后两个半月内产量超过 16 万桶油当量，约占原油产量的 66%。第二个双井平台（右）目前正在建设中，第三个平台计划在西北方向圈定产油窗口。（来源：Hart Energy 通过德克萨斯铁路委员会 GIS 查看器）

EOG Pearsall 停产

EOG Resources 去年夏天在弗里奥县 (Frio County) 进行了一次 Pearsall 测试钻探，该地距离福门特拉岛的 Hurrikain/Darlene 井台西南约 15 英里，那里的产油层通常富含气体。

该公司于 3 月 24 日向 RRC 提交了一份不完整的天然气井 G-1 表格，表格内容为 Burns Ranch #1H 气井，并将其描述为一口停产的天然气生产井。

EOG 报告显示，Pearsall 在井场处于下倾状态，高度约为 11,000 英尺。

福门特拉岛井背景视图
（来源：哈特能源通过德克萨斯铁路委员会 GIS 查看器）
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Formentera Drilling Two More Pearsall Wildcats After Initial Success

In their first 2.5 months online, Formentera Partners’ initial two tests are averaging more than 1,000 boe/d, according to Texas Railroad Commission data.

Nissa
Darbonne
Oil and Gas Investor

 Formentera Partners is drilling more Pearsall wildcats in South Texas in delineating its new play, the E&P confirmed to Hart Energy.

The company’s initial two wells have kept up more than 1,000 boe/d in their first 2.5 months online.

In its first 75 days through March, Formentera’s Darlene 1-STX #N731HP made 51,504 bbl and 142 MMcf, totaling 75,149 boe, 69% oil, or an average of 1,002 boe/d, in southeastern Frio County, according to the most current Texas Railroad Commission (RRC) data.

The other well in the initial two-well pad, Hurrikain Cat I-STX #S731H, made 55,180 bbl and 201 MMcf, totaling 88,647 boe, 62% oil, or an average of 1,249 boe/d in its first 71 days.

Formentera is in a joint venture (JV) with another private E&P, Britanco LLC, and Joe Jaggers, founder of Permian-focused Jagged Peak Energy, which Formentera managing partner Bryan Sheffield’s Parsley Energy bought for $2.3 billion in stock and debt assumption in 2019.

Sheffield sold Parsley in 2021 for $7.6 billion in stock and debt assumption to Pioneer Natural Resources. Since then, Pioneer was sold to Exxon Mobil for $64.5 billion.

The JV's first two wells’ combined 3.24 miles of lateral are parallel to Highway 1582 and terminate near its intersection with Highway 85. The wells are surrounded by short Austin Chalk laterals landed uphole at about 6,500 ft that were drilled pre-2000 and have since been plugged.

The Pearsall in the area is at about 10,000 ft.

One of Formentera’s two newest two-well pads toward delineating its leasehold is about 10 miles east and parallel to the Hurrikain/Darlene pad.

The wells are the northerly directed Hooey-STX Unit #N731H and the southerly directed Sendero-STX Unit #S731H.

Formentera is running casing currently on the Sendero well and plans to drill the Hooey next, Sheffield confirmed.

Patterson-UTI Drilling’s Apex-XK #271 walking rig is making the Sendero/Hooey holes.

The third pad is planned for about three miles northwest of Hurrikain/Darlene, stretching parallel to McKinley Road from the foot of McKinley air field at Interstate 35 south of Pearsall, Texas, and terminating south of Stacey Road.

The wells are the north-lateral Roper-STX #N731H and the south-lateral Roper-STX Unit #S731H.

Updip oil window

The new Pearsall attempts to make the tight-rock Pearsall pay after wildcatters gave up on it in the mid-2010s is using modern, higher-intensity frac recipes.

Also, Formentera’s focus is updip of where Pearsall wildcatting in the early 2010s met primarily with gas.

The Hurrikain and Darlene wells were landed in the Pearsall trend’s Lower Bexar member.

There, the Pearsall sits about 3,000 ft deeper than the Eagle Ford and about 3,500 ft deeper than the Austin Chalk.

The JV with Britanco and Jaggers is on a block of Indio Tanks-Pearsall Field leasehold underlying the Briscoe Ranch-Eagle Ford and Pearsall-Austin Chalk fields.

“I applaud the Britanco team, the driving force that brought in Joe Jaggers, for sticking their necks out in leasing the block,” Sheffield told Hart Energy.

The Hurrikain well came in with a 24-hour IP of 1,499 bbl from a 7,862-ft lateral on a 36/64 choke. Gravity is 44 °API.

The well had already flowed 15,130 bbl during its first 14 days prior to Feb. 3, the day of the test, according to the RRC file.

The Darlene wildcat IP’ed 1,282 bbl/d on Feb. 7 from a 9,220-ft lateral on a 36/64-inch choke. Production in the last few days of January was 5,001 bbl after being completed Jan. 15.

Frac fluid was 2,421 bbl/ft. Proppant was not included in the IP report.

The only other Pearsall oil producer in Frio County is the Whitley Dubose #1H that was made by Marathon Oil in 2014 and is now owned by Britanco.

The 5,736-ft lateral—parallel to the Darlene and Hurrikain laterals a few hundred yards away—was completed with 16 bbl/ft of fluid and 475 lb of proppant/ft in 20 stages, according to the RRC file.

The IP was 152 bbl and 183 Mcf on a 12/64-inch choke. In the well’s 11 years online, it has made 97,754 bbl and 350 MMcf. In January, production was 125 bbl; Britanco reported no production from the well in February or March, according to the RRC file.

Marathon sold the Pearsall test well in 2016 to Earthstone Energy, which sold it again in 2022 to Alvarado 2014 LLC.

Britanco bought it mid-2023.

Formentera 3 pads 6 wells map
Formentera Partners' first 2-well Pearsall pad (center) has produced more than 160,000 boe in its first 2.5 months online, roughly 66% oil. A second 2-well pad (right) is underway currently and a third is planned to delineate the oil window northwest. (Source: Hart Energy via Texas Railroad Commission GIS viewer)

EOG Pearsall shut-in

EOG Resources drilled a Pearsall test last summer in Frio County about 15 miles southwest of Formentera’s Hurrikain/Darlene pad, where the pay has typically been gassy.

It filed an incomplete gas-well G-1 form with the RRC on March 24 for the well, Burns Ranch #1H, describing it as a shut-in producer.

The EOG report showed Pearsall is downdip at the wellsite, sitting at about 11,000 ft.

Formentera wells context view
(Source: Hart Energy via Texas Railroad Commission GIS viewer)
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